| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [verb] that [art] | 1191 |
|
| 2 | difficult [verb] that [art] | 88 |
|
| 3 | not difficult [verb] [art] | 45 |
|
| 4 | not difficult [verb] that | 21 |
|
